Add mutex implementation

src/os2/mutex.cpp

@@ -0,0 +1,19 @@
+#include <sta/os2/mutex.hpp>
+
+
+namespace sta
+{
+	Os2Mutex::Os2Mutex(osMutexId_t * handle)
+		: handle_{handle}
+	{}
+
+	void Os2Mutex::acquire()
+	{
+		osMutexAcquire(*handle_, osWaitForever);
+	}
+
+	void Os2Mutex::release()
+	{
+		osMutexRelease(*handle_);
+	}
+}